diff options
Diffstat (limited to '')
-rw-r--r-- | winit/src/subscription.rs | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/winit/src/subscription.rs b/winit/src/subscription.rs deleted file mode 100644 index bad68d55..00000000 --- a/winit/src/subscription.rs +++ /dev/null @@ -1,97 +0,0 @@ -use iced_native::{Event, Hasher, Subscription}; -use std::collections::HashMap; - -pub struct Pool { - alive: HashMap<u64, Handle>, -} - -pub struct Handle { - _cancel: futures::channel::oneshot::Sender<()>, - listener: Option<futures::channel::mpsc::Sender<Event>>, -} - -impl Pool { - pub fn new() -> Self { - Self { - alive: HashMap::new(), - } - } - - pub fn update<Message: Send>( - &mut self, - subscription: Subscription<Message>, - thread_pool: &mut futures::executor::ThreadPool, - proxy: &winit::event_loop::EventLoopProxy<Message>, - ) { - use futures::{future::FutureExt, stream::StreamExt}; - - let recipes = subscription.recipes(); - let mut alive = std::collections::HashSet::new(); - - for recipe in recipes { - let id = { - use std::hash::Hasher as _; - - let mut hasher = Hasher::default(); - recipe.hash(&mut hasher); - - hasher.finish() - }; - - let _ = alive.insert(id); - - if !self.alive.contains_key(&id) { - let (cancel, cancelled) = futures::channel::oneshot::channel(); - - // TODO: Use bus if/when it supports async - let (event_sender, event_receiver) = - futures::channel::mpsc::channel(100); - - let stream = recipe.stream(event_receiver.boxed()); - let proxy = proxy.clone(); - - let future = futures::future::select( - cancelled, - stream.for_each(move |message| { - proxy - .send_event(message) - .expect("Send subscription result to event loop"); - - futures::future::ready(()) - }), - ) - .map(|_| ()); - - thread_pool.spawn_ok(future); - - let _ = self.alive.insert( - id, - Handle { - _cancel: cancel, - listener: if event_sender.is_closed() { - None - } else { - Some(event_sender) - }, - }, - ); - } - } - - self.alive.retain(|id, _| alive.contains(&id)); - } - - pub fn broadcast_event(&mut self, event: Event) { - self.alive - .values_mut() - .filter_map(|connection| connection.listener.as_mut()) - .for_each(|listener| { - if let Err(error) = listener.try_send(event.clone()) { - log::error!( - "Error sending event to subscription: {:?}", - error - ); - } - }); - } -} |